Loop over all versions until a stable version is found

Signed-off-by: Noah Knegt <git@noahknegt.com>

roles/docker/tasks/check_version.yml

@@ -18,11 +18,14 @@
     name: jq
     state: present
 
+- name: Fetch versions from github
+  shell: curl -s https://api.github.com/repos/docker/cli/tags
+  register: docker_versions
+
 - name: Check if latest version is stable
-  shell: "curl -s https://api.github.com/repos/docker/cli/tags | jq -r '.[{{ item }}].name' | grep -E -o '[0-9]+\\.[0-9]+\\.[0-9]+\\-?'"
+  shell: "{{ docker_versions }} | jq -r '.[{{ item }}].name' | grep -E -o '[0-9]+\\.[0-9]+\\.[0-9]+\\-?'"
   register: docker_latest_version
-  loop: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+  until: docker_latest_version.stdout is not search('-')
-  until: docker_latest_version.stdout.find('-') == -1
 
 - name: Compare versions
   set_fact: